INFO: task syz-executor.2:19412 blocked for more than 143 seconds. Not tainted 5.15.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28496 pid:19412 ppid: 6533 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion_timeout+0x171/0x280 kernel/sched/completion.c:157 usb_start_wait_urb+0x144/0x4c0 drivers/usb/core/message.c:63 usb_bulk_msg+0x226/0x550 drivers/usb/core/message.c:387 do_proc_bulk+0x3a3/0x750 drivers/usb/core/devio.c:1236 proc_bulk drivers/usb/core/devio.c:1273 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2547 [inline] usbdev_ioctl+0x586/0x36c0 drivers/usb/core/devio.c:2713 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fdf18766a39 RSP: 002b:00007fdf15cdc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fdf18869f60 RCX: 00007fdf18766a39 RDX: 0000000020000000 RSI: 00000000c0185502 RDI: 0000000000000003 RBP: 00007fdf187c0e8f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff93b0e45f R14: 00007fdf15cdc300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8b981b20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by in:imklog/6223: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy7 ieee80211_iface_work RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x78/0x80 kernel/kcov.c:272 Code: 72 27 41 0f b6 fb 41 0f b6 c9 48 83 c2 01 48 c7 44 30 e0 01 00 00 00 48 89 7c 30 e8 48 89 4c 30 f0 4c 89 54 d8 20 48 89 10 5b 0f 1f 80 00 00 00 00 53 41 89 fb 41 89 f1 bf 03 00 00 00 65 48 RSP: 0018:ffffc90000cf7258 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888011f21c80 RDX: 0000000000000000 RSI: ffff888011f21c80 RDI: 0000000000000003 RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8892e447 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88807a90d475 R15: ffff88807a90d474 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbe4c4b7000 CR3: 000000000b68e000 CR4: 0000000000350ef0 Call Trace: _ieee802_11_parse_elems_crc+0x227/0x20f0 net/mac80211/util.c:1063 ieee802_11_parse_elems_crc+0x89e/0xfe0 net/mac80211/util.c:1490 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2207 [inline] ieee80211_rx_mgmt_probe_beacon+0x187/0x17c0 net/mac80211/ibss.c:1605 ieee80211_ibss_rx_queued_mgmt+0xd37/0x1610 net/mac80211/ibss.c:1635 ieee80211_iface_process_skb net/mac80211/iface.c:1439 [inline] ieee80211_iface_work+0xa65/0xd00 net/mac80211/iface.c:1493 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 72 27 jb 0x29 2: 41 0f b6 fb movzbl %r11b,%edi 6: 41 0f b6 c9 movzbl %r9b,%ecx a: 48 83 c2 01 add $0x1,%rdx e: 48 c7 44 30 e0 01 00 movq $0x1,-0x20(%rax,%rsi,1) 15: 00 00 17: 48 89 7c 30 e8 mov %rdi,-0x18(%rax,%rsi,1) 1c: 48 89 4c 30 f0 mov %rcx,-0x10(%rax,%rsi,1) 21: 4c 89 54 d8 20 mov %r10,0x20(%rax,%rbx,8) 26: 48 89 10 mov %rdx,(%rax) 29: 5b pop %rbx * 2a: c3 retq <-- trapping instruction 2b: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 32: 53 push %rbx 33: 41 89 fb mov %edi,%r11d 36: 41 89 f1 mov %esi,%r9d 39: bf 03 00 00 00 mov $0x3,%edi 3e: 65 gs 3f: 48 rex.W